{"nhtsa_id":11025810,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-12-01","date":"2025-11-18","document_id":"SSM 54387","mfr_campaign":null,"replaces":null,"component":"ENGINE; ELECTRICAL SYSTEM; UNKNOWN OR OTHER","mfr_system":null,"summary":"Some 2021-2024 Mustang Mach-E vehicles may exhibit a condition where the interior propulsion sound feature does not remain active and deactivates immediately. This may be due to the audio control module (ACM) configuration. To restore the functionality of this feature, download and run the \"ACM - Enable Engine Sound Enhancement and Active Noise Control\" application in the Ford Diagnosis and Repair System (FDRS) scan tool. In cases where the ACM is replaced, this routine will run during the \"ACM - Programmable Module Installation (PMI)\" application. Make sure to follow the FDRS on-screen instructions carefully. For claiming, use causal part 18C869 and labor operation numbers 12651D and 12651D4.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11025810-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11025810-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11025810","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"MUSTANG MACH E","year_from":2021,"year_to":2024,"match":"exact","vehicle_ids":["2021_ford_mustang-mach-e","2022_ford_mustang-mach-e","2023_ford_mustang-mach-e","2024_ford_mustang-mach-e"]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}